Aiptasia control

i had a peppermint shrimp, it devoured all my aptasia. once the
shrimp died, the aptasia came back slowly but surely. after about 3-4
months of not having that shrimp i have about 30-40 aptasia ATLEAST in
my 29gal aquapod. I have been injecting lemon juice only about 3
times in that 3-4 months period, but it has failed to kill some of
them just turn them clear. So, the lemon juice MAY HAVE caused another
population explosion, MAY HAVE, but i do have more aptasia. Again, i
only injected 3 different times, cause i have been lazy in the
injection department, i just dont like to do it.

We got 2 peppermint shrimp for the 60 gal a few weeks ago, as soon as
we dropped it in from teh acclimated bag, it fell down about 1 inch
from a fully expanded aptasia with tentacles reaching about 1.5 inches
in diameter at the top, it started eating at the edge of the extended
tentacles, the next day forward there has NOT been a single aptasia
sighting. obviously peppermint shrimp have their uses. Stick 5-10
shrimp in there and call it a day.